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# This file is part of cloud-init. See LICENSE file for license information.
from collections import namedtuple
import copy
import os
from io import StringIO
from cloudinit.cmd import main
from cloudinit import safeyaml
from cloudinit.util import (
ensure_dir, load_file, write_file)
from cloudinit.tests.helpers import (
FilesystemMockingTestCase, wrap_and_call)
mypaths = namedtuple('MyPaths', 'run_dir')
myargs = namedtuple('MyArgs', 'debug files force local reporter subcommand')
class TestMain(FilesystemMockingTestCase):
def setUp(self):
super(TestMain, self).setUp()
self.new_root = self.tmp_dir()
self.cloud_dir = self.tmp_path('var/lib/cloud/', dir=self.new_root)
os.makedirs(self.cloud_dir)
self.replicateTestRoot('simple_ubuntu', self.new_root)
self.cfg = {
'datasource_list': ['None'],
'runcmd': ['ls /etc'], # test ALL_DISTROS
'system_info': {'paths': {'cloud_dir': self.cloud_dir,
'run_dir': self.new_root}},
'write_files': [
{
'path': '/etc/blah.ini',
'content': 'blah',
'permissions': 0o755,
},
],
'cloud_init_modules': ['write-files', 'runcmd'],
}
cloud_cfg = safeyaml.dumps(self.cfg)
ensure_dir(os.path.join(self.new_root, 'etc', 'cloud'))
self.cloud_cfg_file = os.path.join(
self.new_root, 'etc', 'cloud', 'cloud.cfg')
write_file(self.cloud_cfg_file, cloud_cfg)
self.patchOS(self.new_root)
self.patchUtils(self.new_root)
self.stderr = StringIO()
self.patchStdoutAndStderr(stderr=self.stderr)
def test_main_init_run_net_stops_on_file_no_net(self):
"""When no-net file is present, main_init does not process modules."""
stop_file = os.path.join(self.cloud_dir, 'data', 'no-net') # stop file
write_file(stop_file, '')
cmdargs = myargs(
debug=False, files=None, force=False, local=False, reporter=None,
subcommand='init')
(_item1, item2) = wrap_and_call(
'cloudinit.cmd.main',
{'util.close_stdin': True,
'netinfo.debug_info': 'my net debug info',
'util.fixup_output': ('outfmt', 'errfmt')},
main.main_init, 'init', cmdargs)
# We should not run write_files module
self.assertFalse(
os.path.exists(os.path.join(self.new_root, 'etc/blah.ini')),
'Unexpected run of write_files module produced blah.ini')
self.assertEqual([], item2)
# Instancify is called
instance_id_path = 'var/lib/cloud/data/instance-id'
self.assertFalse(
os.path.exists(os.path.join(self.new_root, instance_id_path)),
'Unexpected call to datasource.instancify produced instance-id')
expected_logs = [
"Exiting. stop file ['{stop_file}'] existed\n".format(
stop_file=stop_file),
'my net debug info' # netinfo.debug_info
]
for log in expected_logs:
self.assertIn(log, self.stderr.getvalue())
def test_main_init_run_net_runs_modules(self):
"""Modules like write_files are run in 'net' mode."""
cmdargs = myargs(
debug=False, files=None, force=False, local=False, reporter=None,
subcommand='init')
(_item1, item2) = wrap_and_call(
'cloudinit.cmd.main',
{'util.close_stdin': True,
'netinfo.debug_info': 'my net debug info',
'util.fixup_output': ('outfmt', 'errfmt')},
main.main_init, 'init', cmdargs)
self.assertEqual([], item2)
# Instancify is called
instance_id_path = 'var/lib/cloud/data/instance-id'
self.assertEqual(
'iid-datasource-none\n',
os.path.join(load_file(
os.path.join(self.new_root, instance_id_path))))
# modules are run (including write_files)
self.assertEqual(
'blah', load_file(os.path.join(self.new_root, 'etc/blah.ini')))
expected_logs = [
'network config is disabled by fallback', # apply_network_config
'my net debug info', # netinfo.debug_info
'no previous run detected'
]
for log in expected_logs:
self.assertIn(log, self.stderr.getvalue())
def test_main_init_run_net_calls_set_hostname_when_metadata_present(self):
"""When local-hostname metadata is present, call cc_set_hostname."""
self.cfg['datasource'] = {
'None': {'metadata': {'local-hostname': 'md-hostname'}}}
cloud_cfg = safeyaml.dumps(self.cfg)
write_file(self.cloud_cfg_file, cloud_cfg)
cmdargs = myargs(
debug=False, files=None, force=False, local=False, reporter=None,
subcommand='init')
def set_hostname(name, cfg, cloud, log, args):
self.assertEqual('set-hostname', name)
updated_cfg = copy.deepcopy(self.cfg)
updated_cfg.update(
{'def_log_file': '/var/log/cloud-init.log',
'log_cfgs': [],
'syslog_fix_perms': [
'syslog:adm', 'root:adm', 'root:wheel', 'root:root'
],
'vendor_data': {'enabled': True, 'prefix': []}})
updated_cfg.pop('system_info')
self.assertEqual(updated_cfg, cfg)
self.assertEqual(main.LOG, log)
self.assertIsNone(args)
(_item1, item2) = wrap_and_call(
'cloudinit.cmd.main',
{'util.close_stdin': True,
'netinfo.debug_info': 'my net debug info',
'cc_set_hostname.handle': {'side_effect': set_hostname},
'util.fixup_output': ('outfmt', 'errfmt')},
main.main_init, 'init', cmdargs)
self.assertEqual([], item2)
# Instancify is called
instance_id_path = 'var/lib/cloud/data/instance-id'
self.assertEqual(
'iid-datasource-none\n',
os.path.join(load_file(
os.path.join(self.new_root, instance_id_path))))
# modules are run (including write_files)
self.assertEqual(
'blah', load_file(os.path.join(self.new_root, 'etc/blah.ini')))
expected_logs = [
'network config is disabled by fallback', # apply_network_config
'my net debug info', # netinfo.debug_info
'no previous run detected'
]
for log in expected_logs:
self.assertIn(log, self.stderr.getvalue())
# vi: ts=4 expandtab
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